Apparatus and method of processing handover of a mobile relay station in broadband wireless access (BWA) communication system using multihop relay scheme

Abstract

An apparatus and method of processing handover of a mobile relay station (MRS) in a cellular communication system using a multihop relay scheme is provided. The handover processing method includes transmitting, by the MRS, a handover request message containing child node information to a serving BS when handover is required; making, by the serving BS, an adjacent node list by collecting handover-related information from adjacent nodes to which the MRS is able to be handed over when the handover request message is received; transmitting, by the serving BS, a handover response message containing the adjacent node list to the MRS; and determining, by the MRS, a handover target node based on information contained in the handover response message and transmitting a handover indication message containing the target node to the serving BS. By suggesting the handover method of the MRS in the multihop relay system, it is possible to provide uninterrupted communication to the MRS and its child node in the service area of the MRS.

Description

PRIORITY [0001] This application claims the benefit under 35 U.S.C. § 119 (a) from Korean Patent Application No. 2005-105808 filed on Nov. 7, 2005 in the Korean Intellectual Property Office, the contents of which are incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention generally relates to a broadband wireless access (BWA) communication system using a multihop relay scheme. More particularly, the present invention relates to an apparatus and method of processing handover of a mobile relay station in a BWA communication system using a multihop relay scheme. [0004] 2. Description of the Related Art [0005] In fourth generation (4G) communication systems, researches is being conducted to provide users with various Quality of Service (QoS) at a data rate of over 100 Mbps. Specifically, research into the high rate service support to guarantee mobility and QoS in broadband wireless access (BWA) communication systems suc...

AI Technical Summary

Benefits of technology

[0021] The present invention has been provided to address the above-mentioned and other problems and disadvantages occurring in the conventional arrangement, and an aspect of the pr

Problems solved by technology

However, since the position of the BS is fixed, the IEEE 802.16e communication system has low flexibility in the radio network configuration.

Thus, it is hard to provide efficient communication services in a radio communication environment suffering severe changes of traffic distribution or traffic demand.

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